a serious purpose involved. mock invasion will be part of a training exercise for marines, navy and special ops and police and firefighters. >> security firm based in san diego is hosting this event part of an effort to strengthen emergency preparedness. the problem is we were being attacked by anything they would move quicker than that. hey, 'tis the season. >> i want to thank everybody for joining us. face the nation is next on cbs 5. >> and again jump over to the cw network. channel 44 cable 12678 enjoy your lovely bay area sunday.